The Association is a big winner for 2K8. More realistic than ever witht he addition of team/player options, defining roles for players, there are starting players, 6th man players, substitutes, bench warmers and you can define time for each player for games (if you want to sim) and each also some players might be expressive and troublesome (like an Artest or Byrant), neutral or laid back (like a Garnett). So now you can't just have Artest, Bryant and all stars on your team and be successful and not have the troubles that real life NBA teams have. Players will request trades if not given the amount of time they think they should be getting aswell.
Definately a huge step up from last year, the Association beats Dynasty easily.